CN204206515U - Electromagnetic Heating control circuit and electromagnetic heater - Google Patents
Electromagnetic Heating control circuit and electromagnetic heater Download PDFInfo
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- CN204206515U CN204206515U CN201420685384.0U CN201420685384U CN204206515U CN 204206515 U CN204206515 U CN 204206515U CN 201420685384 U CN201420685384 U CN 201420685384U CN 204206515 U CN204206515 U CN 204206515U
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- control circuit
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- heating control
- electromagnetic heating
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Abstract
The utility model provides a kind of Electromagnetic Heating control circuit and a kind of electromagnetic heater, and wherein, Electromagnetic Heating control circuit, comprising: power supply; Current rectifying and wave filtering circuit, is connected to described power supply, for carrying out rectifying and wave-filtering process to supply current; Resonant circuit, is connected to described current rectifying and wave filtering circuit, for realizing circuit resonance; Auxiliary circuit, is connected to described resonant circuit, and described auxiliary circuit comprises: the first inductance, the diode be connected in series and the first resistance, the series circuit that described diode and described first resistance are formed and described first inductance in parallel; And ON-OFF control circuit, be connected to described auxiliary circuit, for controlling the operating state of described resonant circuit.Pass through technical solutions of the utility model, avoid the problem such as ON-OFF control circuit shorting advance when low-power electromagnetic heats, achieve the effect that electromagnetic heater normally works in total power section, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
Description
Technical field
The utility model relates to electromagnetic heating technique field, in particular to a kind of Electromagnetic Heating control circuit and a kind of electromagnetic heater.
Background technology
In the related, as shown in Figure 1, Electromagnetic Heating control circuit generally includes power supply 1, current rectifying and wave filtering circuit 2, resonant circuit 3, ON-OFF control circuit 5, wherein, power switch, if the transistor 51 in figure is as the operating state of switch control rule resonant circuit 3, but when Electromagnetic Heating control circuit works at low power period, transistor is easily open-minded in advance, cause the appearance overcurrent of transistor 51, cross the problems such as thermal breakdown, therefore, under low-power heating, the general working method adopting intermittent-heating.
But thisly intermittently heat, causing can not continuous heating, affects the culinary art effect of food, in addition, adopts the working method of intermittent-heating can produce larger noise, affect Consumer's Experience.
Therefore, how to design the structure of Electromagnetic Heating control circuit, make it to realize the technical problem that low-power continuous heating becomes urgently to be resolved hurrily.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, an object of the present utility model is to propose a kind of Electromagnetic Heating control circuit realizing low-power continuous heating.
Another object of the present utility model is to propose a kind of electromagnetic heater.
For achieving the above object, according to the embodiment of first aspect of the present utility model, propose a kind of Electromagnetic Heating control circuit, comprising: power supply; Current rectifying and wave filtering circuit, is connected to described power supply, for carrying out rectifying and wave-filtering process to supply current; Resonant circuit, is connected to described current rectifying and wave filtering circuit, for realizing circuit resonance; Auxiliary circuit, is connected to described resonant circuit, and described auxiliary circuit comprises: the first inductance; The diode be connected in series and the first resistance, the series circuit that described diode and described first resistance are formed and described first inductance in parallel; And ON-OFF control circuit, be connected to described auxiliary circuit, for controlling the operating state of described resonant circuit.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging auxiliary circuit at Electromagnetic Heating control circuit, and be connected between resonant circuit and ON-OFF control circuit, can effectively suppress resonance current to the percussion of power switch, avoid the problems such as overcurrent, the excessively thermal breakdown that power switch causes because of shorting advance when low-power electromagnetic heats, make electromagnetic heater can realize the effect of laser heating under low-power, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
According to the embodiment of second aspect of the present utility model, also propose a kind of Electromagnetic Heating control circuit, comprising: power supply; Current rectifying and wave filtering circuit, is connected to described power supply, for carrying out rectifying and wave-filtering process to supply current; Auxiliary circuit, is connected to described current rectifying and wave filtering circuit, and described auxiliary circuit comprises: the first inductance, the diode be connected in series and the first resistance, the series circuit that described diode and described first resistance are formed and described first inductance in parallel; Resonant circuit, is connected to described auxiliary circuit, for realizing circuit resonance; And ON-OFF control circuit, be connected to described resonant circuit, for controlling the operating state of described resonant circuit.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging auxiliary circuit at Electromagnetic Heating control circuit, and be connected between current rectifying and wave filtering circuit and resonant circuit, can effectively suppress resonance current to the percussion of power switch, avoid the problems such as overcurrent, the excessively thermal breakdown that power switch causes because of shorting advance when low-power electromagnetic heats, make electromagnetic heater can realize the effect of laser heating under low-power, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
In addition, according to the Electromagnetic Heating control circuit of the utility model above-described embodiment, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, described auxiliary circuit, also comprises: the auxiliary capacitor being connected in parallel to described first resistance.
According to an embodiment of the present utility model, described auxiliary circuit, also comprises: the auxiliary capacitor being connected to described first resistance.
According to an embodiment of the present utility model, described current rectifying and wave filtering circuit, comprise: bridge circuit, the input of described bridge circuit is connected in parallel in the output of described power supply (1), and the output of described bridge circuit comprises bridge circuit negative pole end and bridge circuit positive terminal; Second electric capacity, the first end of described second electric capacity is connected with described bridge circuit negative pole end; Second inductance, is connected to described second electric capacity, and the first end of described second inductance is connected to described bridge circuit positive terminal.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by current rectifying and wave filtering circuit, rectifying and wave-filtering process is carried out to the electric current flowing into Electromagnetic Heating control circuit, foregoing circuit is treated to unidirectional low noise direct current, so ensure resonant circuit and auxiliary circuit working properly.
According to an embodiment of the present utility model, described resonant circuit comprises: the 3rd electric capacity be connected in series and the 3rd inductance, or the 3rd electric capacity be connected in parallel and the 3rd inductance.
According to an embodiment of the present utility model, described ON-OFF control circuit, comprising: transistor, and the emitter of described transistor is connected to described current rectifying and wave filtering circuit, the collector electrode of described transistor is connected to the first end of described first inductance, and the grid of described transistor connects microprocessor; The voltage stabilizing didoe be connected in parallel and protective resistance, the negative electrode of described voltage stabilizing didoe is connected to the common port of the grid of described microprocessor and described transistor, and the anode of described voltage stabilizing didoe is connected to the emitter of described transistor.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging ON-OFF control circuit in Electromagnetic Heating control circuit, can low-power consumption, realize controlling the on off state of Electromagnetic Heating control circuit rapidly, improve the switch transition efficiency of electromagnetic heater, improve Consumer's Experience.
According to an embodiment of the present utility model, when described auxiliary circuit comprises the auxiliary capacitor being connected in parallel to described first resistance, the anode of described diode is connected with one end of described first resistance, the negative electrode of described diode is connected with described resonant circuit with the connected node of described first inductance, and the other end of described first resistance is connected with the collector electrode of described transistor with the connected node of described first inductance.
According to an embodiment of the present utility model, when described auxiliary circuit comprises the auxiliary capacitor being connected to described first resistance, the anode of described diode is connected with one end of described first resistance, the negative electrode of described diode is connected with described resonant circuit with the connected node of described first inductance, and the other end of described first resistance is connected with the collector electrode of described transistor with the connected node of described first inductance.
According to the embodiment of the utility model third aspect, also proposed a kind of electromagnetic heater, comprising: the Electromagnetic Heating control circuit described in above-mentioned any one technical scheme.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of the Electromagnetic Heating control circuit in correlation technique;
Fig. 2 shows the structural representation of the Electromagnetic Heating control circuit according to an embodiment of the present utility model;
Fig. 3 shows the structural representation of the Electromagnetic Heating control circuit according to another embodiment of the present utility model;
Fig. 4 shows the structural representation of the Electromagnetic Heating control circuit according to another embodiment of the present utility model;
Fig. 5 shows the structural representation of the Electromagnetic Heating control circuit according to another embodiment of the present utility model.
Wherein, the corresponding relation in Fig. 1 to Fig. 5 between Reference numeral and component names is: 1 power supply, 2 current rectifying and wave filtering circuits, 3 resonant circuits; 4 auxiliary circuits, 5 ON-OFF control circuit, 11 piezo-resistances; 12 the 4th electric capacity, 21 second electric capacity, 22 second inductance; 31 the 3rd electric capacity, 32 the 3rd inductance, 41 first inductance; 42 diodes, 43 first resistance, 44 auxiliary capacitors; 51 transistors, 52 voltage stabilizing didoes, 53 protective resistances.
Embodiment
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not by the restriction of following public specific embodiment.
Fig. 2 shows the structural representation of the Electromagnetic Heating control circuit according to an embodiment of the present utility model.
As shown in Figure 2, according to the Electromagnetic Heating control circuit of an embodiment of the present utility model, comprising: power supply 1; Current rectifying and wave filtering circuit 2, is connected to described power supply 1, for carrying out rectifying and wave-filtering process to supply current; Resonant circuit 3, is connected to described current rectifying and wave filtering circuit 2, for realizing circuit resonance; Auxiliary circuit 4, is connected to described resonant circuit 3, and described auxiliary circuit 4 comprises: the first inductance 41, the diode 42 be connected in series and the first resistance 43, and the series circuit that described diode 42 and described first resistance 43 are formed is in parallel with described first inductance 41; And ON-OFF control circuit 5, be connected to described auxiliary circuit 4, for controlling the operating state of described resonant circuit 3.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging auxiliary circuit at Electromagnetic Heating control circuit, and be connected between resonant circuit and ON-OFF control circuit, can effectively suppress resonance current to the percussion of power switch, avoid the problems such as overcurrent, the excessively thermal breakdown that power switch causes because of shorting advance when low-power electromagnetic heats, make electromagnetic heater can realize the effect of laser heating under low-power, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
Fig. 4 shows the structural representation of the Electromagnetic Heating control circuit according to another embodiment of the present utility model.
As shown in Figure 4, according to the Electromagnetic Heating control circuit of another embodiment of the present utility model, comprising: power supply 1; Current rectifying and wave filtering circuit 2, is connected to described power supply 1, for carrying out rectifying and wave-filtering process to supply current; Auxiliary circuit 4, is connected to described current rectifying and wave filtering circuit 2, and described auxiliary circuit 4 comprises: the first inductance 41, the diode 42 be connected in series and the first resistance 43, and the series circuit that described diode 42 and described first resistance 43 are formed is in parallel with described first inductance 41; Resonant circuit 3, is connected to described auxiliary circuit 4, for realizing circuit resonance 3; And ON-OFF control circuit 5, be connected to described resonant circuit 3, for controlling the operating state of described resonant circuit.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging auxiliary circuit at Electromagnetic Heating control circuit, and be connected between current rectifying and wave filtering circuit and resonant circuit, can effectively suppress resonance current to the percussion of power switch, avoid the problems such as overcurrent, the excessively thermal breakdown that power switch causes because of shorting advance when low-power electromagnetic heats, make electromagnetic heater can realize the effect of laser heating under low-power, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
According to another embodiment of the present utility model, as shown in Figure 3,4, auxiliary circuit 4 also comprises: the auxiliary capacitor 44 being connected in parallel to described first resistance 43.
According to another embodiment of the present utility model, as shown in Figure 5, auxiliary circuit 4 also comprises: the auxiliary capacitor 44 being connected to described first resistance 43.
According to an embodiment of the present utility model, described current rectifying and wave filtering circuit 2, comprise: bridge circuit, the input of described bridge circuit is connected in parallel in the output of described power supply, and the output of described bridge circuit comprises bridge circuit negative pole end and bridge circuit positive terminal; Second electric capacity 21, described current rectifying and wave filtering circuit 2 is connected with described bridge circuit negative pole end; Second inductance 22, is connected to described second electric capacity 21, and the first end of described second inductance 22 is connected to described bridge circuit positive terminal.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by current rectifying and wave filtering circuit 2, rectifying and wave-filtering process is carried out to the electric current flowing into Electromagnetic Heating control circuit, foregoing circuit is treated to unidirectional low noise direct current, so ensure resonant circuit 3 and auxiliary circuit 4 working properly.
According to an embodiment of the present utility model, described resonant circuit comprises: the 3rd electric capacity 31 be connected in series and the 3rd inductance 32, or the 3rd electric capacity 31 be connected in parallel and the 3rd inductance 32.
According to an embodiment of the present utility model, described ON-OFF control circuit 5 comprises: transistor 51, the emitter of described transistor 51 is connected to described current rectifying and wave filtering circuit 2, the collector electrode of described transistor 51 is connected to the first end of described first inductance 41, and the grid of described transistor 51 connects microprocessor; The voltage stabilizing didoe 52 be connected in parallel and protective resistance 53, the negative electrode of described voltage stabilizing didoe 52 is connected to the common port of the grid of described microprocessor and described transistor 51, and the anode of described voltage stabilizing didoe 52 is connected to the emitter of described transistor 51.
According to the Electromagnetic Heating control circuit of embodiment of the present utility model, by arranging ON-OFF control circuit 5 in Electromagnetic Heating control circuit, can low-power consumption, realize controlling the on off state of Electromagnetic Heating control circuit rapidly, improve the switch transition efficiency of electromagnetic heater, improve Consumer's Experience.
According to an embodiment of the present utility model, when described auxiliary circuit 4 comprises the auxiliary capacitor 44 being connected in parallel to described first resistance 43, the anode of described diode 42 is connected with one end of described first resistance 43, the negative electrode of described diode 42 is connected with described resonant circuit 3 with the connected node of described first inductance 41, and the other end of described first resistance 43 is connected with the collector electrode of described transistor 51 with the connected node of described first inductance 41.
According to an embodiment of the present utility model, when described auxiliary circuit 4 comprises the auxiliary capacitor 44 being connected to described first resistance 43, the anode of described diode 42 is connected with one end of described first resistance 43, the negative electrode of described diode 42 is connected with described resonant circuit 3 with the connected node of described first inductance 41, and the other end of described first resistance 43 is connected with the collector electrode of described transistor 51 with the connected node of described first inductance 41.
According to an embodiment of the present utility model, as shown in Figure 2, the concrete connected mode of auxiliary circuit 4 is: the anode of described diode 42 is connected with one end of described first resistance 43, the negative electrode of described diode 42 is connected with described resonant circuit with the connected node of described first inductance 41, and the other end of described first resistance 43 is connected with the collector electrode of described transistor 51 with the connected node of described first inductance 41.
According to an embodiment of the present utility model, described resonant circuit 3 comprises: the 3rd electric capacity 31 be connected in series and the 3rd inductance 32 (as shown in Fig. 2, Fig. 3 and Fig. 5), or the 3rd electric capacity 31 be connected in parallel and the 3rd inductance 32 (as shown in Figure 4).Wherein, namely the 3rd electric capacity 31 be resonant capacitance, and namely the 3rd inductance 32 is resonant inductance, and this resonant inductance is generally the coil of large sensibility reciprocal, and in conventional electromagnetic heater, be the coil in coil panel, resonant capacitance is also bulky capacitor.
Wherein, the induction reactance value of the first inductance 41 is less than the induction reactance value of described 3rd inductance 32.Because the 3rd inductance is generally the coil of large sensibility reciprocal, inhibiting first inductance 41 is risen to resonance current and usually preferably adopts small sensible weight coil.
In addition, the utility model also proposes a kind of electromagnetic heater, this electromagnetic heater comprises the Electromagnetic Heating control circuit described in above any one technical scheme, the electromagnetic heater of this Electromagnetic Heating control circuit is adopted to have the effect that can realize laser heating under low-power, enhance the culinary art effect of electromagnetic heater, improve Consumer's Experience.
More than be described with reference to the accompanying drawings the technical solution of the utility model, consider in correlation technique the structure proposing how to design Electromagnetic Heating control circuit, make it the technical problem realizing low-power continuous heating, the utility model proposes and a kind ofly realize the Electromagnetic Heating control circuit of low-power continuous heating and a kind of electromagnetic heater.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. an Electromagnetic Heating control circuit, is characterized in that, comprising:
Power supply;
Current rectifying and wave filtering circuit, is connected to described power supply, for carrying out rectifying and wave-filtering process to supply current;
Resonant circuit, is connected to described current rectifying and wave filtering circuit, for realizing circuit resonance;
Auxiliary circuit, is connected to described resonant circuit, and described auxiliary circuit comprises:
First inductance,
The diode be connected in series and the first resistance, the series circuit that described diode and described first resistance are formed and described first inductance in parallel; And
ON-OFF control circuit, is connected to described auxiliary circuit, for controlling the operating state of described resonant circuit.
2. an Electromagnetic Heating control circuit, is characterized in that, comprising:
Power supply;
Current rectifying and wave filtering circuit, is connected to described power supply, for carrying out rectifying and wave-filtering process to supply current;
Auxiliary circuit, is connected to described current rectifying and wave filtering circuit, and described auxiliary circuit comprises:
First inductance,
The diode be connected in series and the first resistance, the series circuit that described diode and described first resistance are formed and described first inductance in parallel;
Resonant circuit, is connected to described auxiliary circuit, for realizing circuit resonance; And
ON-OFF control circuit, is connected to described resonant circuit, for controlling the operating state of described resonant circuit.
3. Electromagnetic Heating control circuit according to claim 1 and 2, is characterized in that, described auxiliary circuit, also comprises:
Be connected in parallel to the auxiliary capacitor of described first resistance.
4. Electromagnetic Heating control circuit according to claim 1 and 2, is characterized in that, described auxiliary circuit, also comprises:
Be connected to the auxiliary capacitor of described first resistance.
5. Electromagnetic Heating control circuit according to claim 1 and 2, is characterized in that, described current rectifying and wave filtering circuit, comprising:
Bridge circuit, the input of described bridge circuit is connected in parallel in the output of described power supply, and the output of described bridge circuit comprises bridge circuit negative pole end and bridge circuit positive terminal;
Second electric capacity, the first end of described second electric capacity is connected with described bridge circuit negative pole end;
Second inductance, is connected to described second electric capacity, and the first end of described second inductance is connected to described bridge circuit positive terminal.
6. Electromagnetic Heating control circuit according to claim 1 and 2, is characterized in that, described resonant circuit comprises: the 3rd electric capacity be connected in series and the 3rd inductance, or the 3rd electric capacity be connected in parallel and the 3rd inductance.
7. Electromagnetic Heating control circuit according to claim 6, is characterized in that, described ON-OFF control circuit, comprising:
Transistor, the emitter of described transistor is connected to described current rectifying and wave filtering circuit, and the collector electrode of described transistor is connected to the first end of described first inductance, and the grid of described transistor connects microprocessor;
The voltage stabilizing didoe be connected in parallel and protective resistance, the negative electrode of described voltage stabilizing didoe is connected to the common port of the grid of described microprocessor and described transistor, and the anode of described voltage stabilizing didoe is connected to the emitter of described transistor.
8. Electromagnetic Heating control circuit according to claim 3, is characterized in that, the anode of described diode is connected with one end of described first resistance, and the negative electrode of described diode is connected with described resonant circuit with the connected node of described first inductance.
9. Electromagnetic Heating control circuit according to claim 4, is characterized in that, the anode of described diode is connected with one end of described first resistance, and the negative electrode of described diode is connected with described resonant circuit with the connected node of described first inductance.
10. an electromagnetic heater, is characterized in that, comprising: Electromagnetic Heating control circuit as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685384.0U CN204206515U (en) | 2014-11-13 | 2014-11-13 | Electromagnetic Heating control circuit and electromagnetic heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685384.0U CN204206515U (en) | 2014-11-13 | 2014-11-13 | Electromagnetic Heating control circuit and electromagnetic heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204206515U true CN204206515U (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420685384.0U Expired - Fee Related CN204206515U (en) | 2014-11-13 | 2014-11-13 | Electromagnetic Heating control circuit and electromagnetic heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204206515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162964A (en) * | 2015-04-07 | 2016-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and resonance circuit |
-
2014
- 2014-11-13 CN CN201420685384.0U patent/CN204206515U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162964A (en) * | 2015-04-07 | 2016-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and resonance circuit |
| CN106162964B (en) * | 2015-04-07 | 2019-09-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and its resonance circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20201113 |